

function ChromaHash(args){
    var getPasswordFields = function(){
        var inputBox = document.getElementsByTagName("input");
        passwordBoxes = [];
        for (var i = 0; i < inputBox.length; i++) {
            if (inputBox[i].type == "password") {
                passwordBoxes.push(inputBox[i])
            }
        }
        return passwordBoxes;
    }
    
    this.params = this.extend(args, {
        "visualization": this.visualize.canvasVisual,
        "domainSalt": true,
        "userSalt": "defaultUserSalt",
        "passwordFields": getPasswordFields()
    });
    
    this.visualHandler = this.params.visualization;
    for (var i = 0; i < args.passwordFields.length; i++) {
        var passwordBox = args.passwordFields[i];
        if (!passwordBox.id) {
            passwordBox.id = "chromahash_" + Math.random();
        }
        
        var me = this;
        var onKeyUpHandler = function(e){
            me.visualHandler.call(me, this);
        }
        
        if (passwordBox.addEventListener) {
            passwordBox.addEventListener("change", onKeyUpHandler, false);
            passwordBox.addEventListener("keyup", onKeyUpHandler, false);
        }
        else {
            passwordBox.onkeyup = onKeyUpHandler;
            passwordBox.onchange = onKeyUpHandler;
        }
        onKeyUpHandler.call(passwordBox);
    }
}

ChromaHash.prototype.extend = function(args, defaultArgs){
    if (!args || typeof(args) !== "object") {
        args = {};
    }
    for (key in defaultArgs) {
        if (!args[key]) {
            args[key] = defaultArgs[key];
        }
    }
    if (typeof(args.visualization) === "string") {
        args.visualization = {
            "bars": this.visualize.changeBars,
            "gradient": this.visualize.changeGradient,
            "canvas": this.visualize.canvasVisual
        }[args.visualization];
    }
    
    if (typeof(args.visualization) !== "function") {
        args.visualization = defaultArgs.visualization;
    }
    return args;
};

ChromaHash.prototype.getElementDimensions = function(passwordBox){
    var findPos = function(element){
        var parent = element.parentNode;
        
        var top = element.offsetTop;
        var left = element.offsetLeft;
        var parentList = {};
        var tempElem = parent;
        while (tempElem != null) {
            parentList[tempElem] = true;
            tempElem = tempElem.parentNode;
        }
        
        tempElem = element.offsetParent;
        while (typeof(tempElem) !== "undefined" && tempElem !== null && (tempElem in parentList)) {
            top += tempElem.offsetTop;
            left += tempElem.offsetLeft;
            tempElem = tempElem.offsetParent;
        }
        return {
            "top": top,
            "left": left
        };
    };
    
    var position = findPos(passwordBox);
    return {
        height: passwordBox.offsetHeight,
        width: passwordBox.offsetWidth,
        top: position.top,
        left: position.left
    }
};

ChromaHash.prototype.getElementValue = function(element){
    var finalValue = element.value + this.params.userSalt;
    if (this.params.domainSalt && this.params.domainSalt != "null" && this.params.domainSalt != "") {
        finalValue += document.domain;
    }
    return hex_md5(finalValue);
};

ChromaHash.prototype.visualize = {
    canvasVisual: function(elem){
        var canvas = document.getElementById("canvas_" + elem.id);
        if (!canvas) {
            var canvas = document.createElement("canvas");
            if (!canvas.getContext) {
                this.visualize.canvasVisual = function(){
                };
                return;
            }
            canvas.id = "canvas_" + elem.id;
            canvas.style.position = "absolute";
            var dimensions = this.getElementDimensions(elem);
            canvas.style.left = dimensions.left + "px";
            canvas.style.top = dimensions.top + "px";
            canvas.height = dimensions.height;
            canvas.width = dimensions.width;
            canvas.style.opacity = 0.5;
			canvas.style.zIndex = 100000;
            document.body.appendChild(canvas);
            
            canvas.addEventListener("mousemove", function(event){
                canvas.style.visibility = "hidden";
            }, false);
            elem.addEventListener("mouseout", function(event){
                canvas.style.visibility = "visible";
            }, false)
            elem.addEventListener("keypress", function(event){
                canvas.style.visibility = "visible";
            }, false);
            window.setInterval(function(){
                canvas.style.visibility = "visible";
            }, 2000);
        }
        var ctx = canvas.getContext('2d')
        var lingrad = ctx.createLinearGradient(0, 0, canvas.width, canvas.height);
        var md5 = this.getElementValue(elem);
        colors = md5.match(/([\dABCDEF]{6})/ig);
        lingrad.addColorStop(0, "#" + colors[0]);
        lingrad.addColorStop(0.25, "#" + colors[1]);
        lingrad.addColorStop(0.5, "#" + colors[2]);
        lingrad.addColorStop(0.75, "#" + colors[3]);
        lingrad.addColorStop(1, "#" + colors[4]);
        ctx.fillStyle = lingrad;
        ctx.fillRect(0, 0, canvas.offsetWidth, parseInt(canvas.height));
    },
    
    changeBars: function(elem){
        var maxColors = 5;
        var backgroundColors = [];
        if (elem.value == "") {
            backgroundColors = ["ffffff", "ffffff", "ffffff", "ffffff", "ffffff"];
        }
        else {
            var md5 = this.getElementValue(elem);
            backgroundColors = md5.match(/([\dABCDEF]{6})/ig);
        }
        
        var barsFound = false;
        var labels = document.getElementsByTagName("label");
        for (var i = 0; i < labels.length; i++) {
            if (labels[i]["for"] === elem.id) {
                try {
                    labels[i].style.backgroundColor = "#" + backgroundColors[labels[i].className];
                } 
                catch (e) {
                    labels[i].style.backgroundColor = eval("0x" + backgroundColors[labels[i].className]);
                }
                barsFound = true;
            }
        }
        if (!barsFound) {
            var dimensions = this.getElementDimensions(elem);
            
            for (var c = 0; c < maxColors; c++) {
                var colorLabel = document.createElement("label");
                colorLabel.className = c;
                colorLabel["for"] = elem.id;
                colorLabel.style.position = "absolute";
                colorLabel.style.left = (dimensions.left + dimensions.width - 2) + "px";
                colorLabel.style.top = dimensions.top + "px";
                colorLabel.style.height = dimensions.height + "px";
                colorLabel.style.width = 15 + "px";
                colorLabel.style.margin = 5 + "px";
                colorLabel.style.marginLeft = -15 * (c + 1) + "px";
                elem.parentNode.insertBefore(colorLabel, elem);
            }
            this.visualHandler.call(this, elem);
        }
    },
    
    changeGradient: function(elem){
        var md5 = this.getElementValue(elem);
        var x = (eval("0x" + md5.substring(0, 16)) % 3000);
        var y = (eval("0x" + md5.substring(17)) % 900);
        elem.style.backgroundPosition = [x, "px ", y, "px "].join("");
        var image = "url('http://github.com/axemclion/Chroma-Hash/raw/6b8403efd88552a4171377d5a5c839570ec4ad62/map.jpg')";
        if (!elem.style.backgroundImage || elem.style.backgroundImage !== image) {
            elem.style.backgroundImage = image;
        }
        
    }
}

/*
 * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
 * Digest Algorithm, as defined in RFC 1321.
 * Version 2.2 Copyright (C) Paul Johnston 1999 - 2009
 * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
 * Distributed under the BSD License
 * See http://pajhome.org.uk/crypt/md5 for more info.
 */
var hexcase = 0;
var b64pad = "";
function hex_md5(A){
    return rstr2hex(rstr_md5(str2rstr_utf8(A)));
}

function b64_md5(A){
    return rstr2b64(rstr_md5(str2rstr_utf8(A)));
}

function any_md5(A, B){
    return rstr2any(rstr_md5(str2rstr_utf8(A)), B);
}

function hex_hmac_md5(A, B){
    return rstr2hex(rstr_hmac_md5(str2rstr_utf8(A), str2rstr_utf8(B)));
}

function b64_hmac_md5(A, B){
    return rstr2b64(rstr_hmac_md5(str2rstr_utf8(A), str2rstr_utf8(B)));
}

function any_hmac_md5(A, C, B){
    return rstr2any(rstr_hmac_md5(str2rstr_utf8(A), str2rstr_utf8(C)), B);
}

function md5_vm_test(){
    return hex_md5("abc").toLowerCase() == "900150983cd24fb0d6963f7d28e17f72";
}

function rstr_md5(A){
    return binl2rstr(binl_md5(rstr2binl(A), A.length * 8));
}

function rstr_hmac_md5(C, F){
    var E = rstr2binl(C);
    if (E.length > 16) {
        E = binl_md5(E, C.length * 8);
    }
    var A = Array(16), D = Array(16);
    for (var B = 0; B < 16; B++) {
        A[B] = E[B] ^ 909522486;
        D[B] = E[B] ^ 1549556828;
    }
    var G = binl_md5(A.concat(rstr2binl(F)), 512 + F.length * 8);
    return binl2rstr(binl_md5(D.concat(G), 512 + 128));
}

function rstr2hex(C){
    try {
        hexcase;
    } 
    catch (F) {
        hexcase = 0;
    }
    var E = hexcase ? "0123456789ABCDEF" : "0123456789abcdef";
    var B = "";
    var A;
    for (var D = 0; D < C.length; D++) {
        A = C.charCodeAt(D);
        B += E.charAt((A >>> 4) & 15) + E.charAt(A & 15);
    }
    return B;
}

function rstr2b64(C){
    try {
        b64pad;
    } 
    catch (G) {
        b64pad = "";
    }
    var F = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    var B = "";
    var A = C.length;
    for (var E = 0; E < A; E += 3) {
        var H = (C.charCodeAt(E) << 16) | (E + 1 < A ? C.charCodeAt(E + 1) << 8 : 0) | (E + 2 < A ? C.charCodeAt(E + 2) : 0);
        for (var D = 0; D < 4; D++) {
            if (E * 8 + D * 6 > C.length * 8) {
                B += b64pad;
            }
            else {
                B += F.charAt((H >>> 6 * (3 - D)) & 63);
            }
        }
    }
    return B;
}

function rstr2any(K, C){
    var B = C.length;
    var J, F, A, L, E;
    var I = Array(Math.ceil(K.length / 2));
    for (J = 0; J < I.length; J++) {
        I[J] = (K.charCodeAt(J * 2) << 8) | K.charCodeAt(J * 2 + 1);
    }
    var H = Math.ceil(K.length * 8 / (Math.log(C.length) / Math.log(2)));
    var G = Array(H);
    for (F = 0; F < H; F++) {
        E = Array();
        L = 0;
        for (J = 0; J < I.length; J++) {
            L = (L << 16) + I[J];
            A = Math.floor(L / B);
            L -= A * B;
            if (E.length > 0 || A > 0) {
                E[E.length] = A;
            }
        }
        G[F] = L;
        I = E;
    }
    var D = "";
    for (J = G.length - 1; J >= 0; J--) {
        D += C.charAt(G[J]);
    }
    return D;
}

function str2rstr_utf8(C){
    var B = "";
    var D = -1;
    var A, E;
    while (++D < C.length) {
        A = C.charCodeAt(D);
        E = D + 1 < C.length ? C.charCodeAt(D + 1) : 0;
        if (55296 <= A && A <= 56319 && 56320 <= E && E <= 57343) {
            A = 65536 + ((A & 1023) << 10) + (E & 1023);
            D++;
        }
        if (A <= 127) {
            B += String.fromCharCode(A);
        }
        else {
            if (A <= 2047) {
                B += String.fromCharCode(192 | ((A >>> 6) & 31), 128 | (A & 63));
            }
            else {
                if (A <= 65535) {
                    B += String.fromCharCode(224 | ((A >>> 12) & 15), 128 | ((A >>> 6) & 63), 128 | (A & 63));
                }
                else {
                    if (A <= 2097151) {
                        B += String.fromCharCode(240 | ((A >>> 18) & 7), 128 | ((A >>> 12) & 63), 128 | ((A >>> 6) & 63), 128 | (A & 63));
                    }
                }
            }
        }
    }
    return B;
}

function str2rstr_utf16le(B){
    var A = "";
    for (var C = 0; C < B.length; C++) {
        A += String.fromCharCode(B.charCodeAt(C) & 255, (B.charCodeAt(C) >>> 8) & 255);
    }
    return A;
}

function str2rstr_utf16be(B){
    var A = "";
    for (var C = 0; C < B.length; C++) {
        A += String.fromCharCode((B.charCodeAt(C) >>> 8) & 255, B.charCodeAt(C) & 255);
    }
    return A;
}

function rstr2binl(B){
    var A = Array(B.length >> 2);
    for (var C = 0; C < A.length; C++) {
        A[C] = 0;
    }
    for (var C = 0; C < B.length * 8; C += 8) {
        A[C >> 5] |= (B.charCodeAt(C / 8) & 255) << (C % 32);
    }
    return A;
}

function binl2rstr(B){
    var A = "";
    for (var C = 0; C < B.length * 32; C += 8) {
        A += String.fromCharCode((B[C >> 5] >>> (C % 32)) & 255);
    }
    return A;
}

function binl_md5(K, F){
    K[F >> 5] |= 128 << ((F) % 32);
    K[(((F + 64) >>> 9) << 4) + 14] = F;
    var J = 1732584193;
    var I = -271733879;
    var H = -1732584194;
    var G = 271733878;
    for (var C = 0; C < K.length; C += 16) {
        var E = J;
        var D = I;
        var B = H;
        var A = G;
        J = md5_ff(J, I, H, G, K[C + 0], 7, -680876936);
        G = md5_ff(G, J, I, H, K[C + 1], 12, -389564586);
        H = md5_ff(H, G, J, I, K[C + 2], 17, 606105819);
        I = md5_ff(I, H, G, J, K[C + 3], 22, -1044525330);
        J = md5_ff(J, I, H, G, K[C + 4], 7, -176418897);
        G = md5_ff(G, J, I, H, K[C + 5], 12, 1200080426);
        H = md5_ff(H, G, J, I, K[C + 6], 17, -1473231341);
        I = md5_ff(I, H, G, J, K[C + 7], 22, -45705983);
        J = md5_ff(J, I, H, G, K[C + 8], 7, 1770035416);
        G = md5_ff(G, J, I, H, K[C + 9], 12, -1958414417);
        H = md5_ff(H, G, J, I, K[C + 10], 17, -42063);
        I = md5_ff(I, H, G, J, K[C + 11], 22, -1990404162);
        J = md5_ff(J, I, H, G, K[C + 12], 7, 1804603682);
        G = md5_ff(G, J, I, H, K[C + 13], 12, -40341101);
        H = md5_ff(H, G, J, I, K[C + 14], 17, -1502002290);
        I = md5_ff(I, H, G, J, K[C + 15], 22, 1236535329);
        J = md5_gg(J, I, H, G, K[C + 1], 5, -165796510);
        G = md5_gg(G, J, I, H, K[C + 6], 9, -1069501632);
        H = md5_gg(H, G, J, I, K[C + 11], 14, 643717713);
        I = md5_gg(I, H, G, J, K[C + 0], 20, -373897302);
        J = md5_gg(J, I, H, G, K[C + 5], 5, -701558691);
        G = md5_gg(G, J, I, H, K[C + 10], 9, 38016083);
        H = md5_gg(H, G, J, I, K[C + 15], 14, -660478335);
        I = md5_gg(I, H, G, J, K[C + 4], 20, -405537848);
        J = md5_gg(J, I, H, G, K[C + 9], 5, 568446438);
        G = md5_gg(G, J, I, H, K[C + 14], 9, -1019803690);
        H = md5_gg(H, G, J, I, K[C + 3], 14, -187363961);
        I = md5_gg(I, H, G, J, K[C + 8], 20, 1163531501);
        J = md5_gg(J, I, H, G, K[C + 13], 5, -1444681467);
        G = md5_gg(G, J, I, H, K[C + 2], 9, -51403784);
        H = md5_gg(H, G, J, I, K[C + 7], 14, 1735328473);
        I = md5_gg(I, H, G, J, K[C + 12], 20, -1926607734);
        J = md5_hh(J, I, H, G, K[C + 5], 4, -378558);
        G = md5_hh(G, J, I, H, K[C + 8], 11, -2022574463);
        H = md5_hh(H, G, J, I, K[C + 11], 16, 1839030562);
        I = md5_hh(I, H, G, J, K[C + 14], 23, -35309556);
        J = md5_hh(J, I, H, G, K[C + 1], 4, -1530992060);
        G = md5_hh(G, J, I, H, K[C + 4], 11, 1272893353);
        H = md5_hh(H, G, J, I, K[C + 7], 16, -155497632);
        I = md5_hh(I, H, G, J, K[C + 10], 23, -1094730640);
        J = md5_hh(J, I, H, G, K[C + 13], 4, 681279174);
        G = md5_hh(G, J, I, H, K[C + 0], 11, -358537222);
        H = md5_hh(H, G, J, I, K[C + 3], 16, -722521979);
        I = md5_hh(I, H, G, J, K[C + 6], 23, 76029189);
        J = md5_hh(J, I, H, G, K[C + 9], 4, -640364487);
        G = md5_hh(G, J, I, H, K[C + 12], 11, -421815835);
        H = md5_hh(H, G, J, I, K[C + 15], 16, 530742520);
        I = md5_hh(I, H, G, J, K[C + 2], 23, -995338651);
        J = md5_ii(J, I, H, G, K[C + 0], 6, -198630844);
        G = md5_ii(G, J, I, H, K[C + 7], 10, 1126891415);
        H = md5_ii(H, G, J, I, K[C + 14], 15, -1416354905);
        I = md5_ii(I, H, G, J, K[C + 5], 21, -57434055);
        J = md5_ii(J, I, H, G, K[C + 12], 6, 1700485571);
        G = md5_ii(G, J, I, H, K[C + 3], 10, -1894986606);
        H = md5_ii(H, G, J, I, K[C + 10], 15, -1051523);
        I = md5_ii(I, H, G, J, K[C + 1], 21, -2054922799);
        J = md5_ii(J, I, H, G, K[C + 8], 6, 1873313359);
        G = md5_ii(G, J, I, H, K[C + 15], 10, -30611744);
        H = md5_ii(H, G, J, I, K[C + 6], 15, -1560198380);
        I = md5_ii(I, H, G, J, K[C + 13], 21, 1309151649);
        J = md5_ii(J, I, H, G, K[C + 4], 6, -145523070);
        G = md5_ii(G, J, I, H, K[C + 11], 10, -1120210379);
        H = md5_ii(H, G, J, I, K[C + 2], 15, 718787259);
        I = md5_ii(I, H, G, J, K[C + 9], 21, -343485551);
        J = safe_add(J, E);
        I = safe_add(I, D);
        H = safe_add(H, B);
        G = safe_add(G, A);
    }
    return Array(J, I, H, G);
}

function md5_cmn(F, C, B, A, E, D){
    return safe_add(bit_rol(safe_add(safe_add(C, F), safe_add(A, D)), E), B);
}

function md5_ff(C, B, G, F, A, E, D){
    return md5_cmn((B & G) | ((~ B) & F), C, B, A, E, D);
}

function md5_gg(C, B, G, F, A, E, D){
    return md5_cmn((B & F) | (G & (~ F)), C, B, A, E, D);
}

function md5_hh(C, B, G, F, A, E, D){
    return md5_cmn(B ^ G ^ F, C, B, A, E, D);
}

function md5_ii(C, B, G, F, A, E, D){
    return md5_cmn(G ^ (B | (~ F)), C, B, A, E, D);
}

function safe_add(A, D){
    var C = (A & 65535) + (D & 65535);
    var B = (A >> 16) + (D >> 16) + (C >> 16);
    return (B << 16) | (C & 65535);
}

function bit_rol(A, B){
    return (A << B) | (A >>> (32 - B));
}


